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竖井揭煤冲煤扫孔技术作用原理

ction principle of cleaning coal and sweeping holes in draft exposing coal

中文摘要英文摘要

本文结合煤体的瓦斯流变特性分析了冲煤扫孔技术应用的必要性,并通过数值模拟分析了孔洞周围煤体的应力分布与变化规律和移动变形规律。孔洞周围煤体的变形破坏,造成了孔隙内裂隙网络发育,构成了煤体解吸运移的通道,增加了煤体的透气性;冲煤扫孔技术的应用使孔洞周围煤体的集中应力往深部移动,在浅部煤体中形成了卸压增透增流的效果。最终达到加速瓦斯排放的效果。

ccording to Rheological properties of coal, paper analyzes necessity of technology for sweep holes. Numerical simulation provides the basis of analysis on Stress distribution and deformation of coal around hole. With deformation of coal around hole, Fracture and porosity network develops, which compose migration pathway of gas and increases permeability of coal. Application of technology for sweep holes makes concentrated stress moves deeper coal, and the shallow coal have the effect of anti reflection and flow increasing. Finally technology for sweep holes accelerate gas drainage.

暴庆丰、程远平、王峰、李培庆

矿山开采

冲煤扫孔竖井揭煤瓦斯排放

clean coal and sweep holesexpose coalaccelerate gas drainage

暴庆丰,程远平,王峰,李培庆.竖井揭煤冲煤扫孔技术作用原理[EB/OL].(2011-05-13)[2025-08-25].http://www.paper.edu.cn/releasepaper/content/201105-325.点此复制

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